Glacor boots are the most comfortable boots available. Barrow gloves aren't that good anymore, they're hybrid gloves and are useful, however, if I were in your shoes I'd go for the TWW automated gloves (Static Pneumatic, Tracking, and Static). They're the equivalent gloves of Glacor boots.

Amulet of Fury remains an excellent amulet, and is the best hybrid amulet in fact. If you've got money to spend , you might want to invest in a Saradomin's Hess (second best magic amulet only just behind Stream Neck), Murmur (currently the top melee amulet in the game) also Whisper (best ranged amulet).

Melee weapon if you do not possess chaotics, you can get Drygores. They're a lot better, however they're very expensive. If you don't want to spend much money, simply use your Saradomin godsword. (or you can train to become a Dung and get a maul)

Magic weapons you could buy Virtus book and wand, but they're pricier than Drygores. Seismic wand and singurarity are a bit expensive right now The price in the ge says that the wand costs 500M, however it's worth 2 bucks. If you're looking to pay a large sum, purchase an Arma battlestaff. It's definitely not as good as an Chaotic staff, but it's better than SoL at a minimum.

With the advent of the grand exchange, goods are exchanged easily, and could effectively be considered the same thing. Imagine that (hypothetically) you require 100k cannonballs in order to slay, and can afford 200k, in 250gp. If you purchase 25000k 100k cannonballs to 300gp , you'll have 30000k that you can use to convert into cash or make use of. If the cannonballs instead fall to 200gp each which is a lot less, you'll end up with 20000k, which you can make cash payments or use.

Doubling your investment will double the profit, regardless of whether it be either positive or negative. If you think that cannonballs will rise, then invest as much money as you want into them: the more you invest will be, the more likely you are to earn return on the items you don't get to use. If you buy less cannonballs than what you'll need in the event that they increase, you will have to purchase the remainder at a higher cost.

Basically, if you think that the price of cannonballs will increase and you want to invest in them, do so regardless of how many you anticipate you'll need to   take down. If you're unsure about whether or not they'll rise take your money as cash and buy cannonballs in the course of your journey instead of buying up.